19427974 has 16 divisors (see below), whose sum is σ = 30997296. Its totient is φ = 9100800.

The previous prime is 19427953. The next prime is 19428011. The reversal of 19427974 is 47972491.

It is a self number, because there is not a number n which added to its sum of digits gives 19427974.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7009 + ... + 9379.

It is an arithmetic number, because the mean of its divisors is an integer number (1937331).

Almost surely, 2^19427974 is an apocalyptic number.

19427974 is a deficient number, since it is larger than the sum of its proper divisors (11569322).

19427974 is a wasteful number, since it uses less digits than its factorization.

19427974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631.

The product of its digits is 127008, while the sum is 43.

The square root of 19427974 is about 4407.7175499344. The cubic root of 19427974 is about 268.8288274987.

The spelling of 19427974 in words is "nineteen million, four hundred twenty-seven thousand, nine hundred seventy-four".